Device for operating elevator-doors



(No Model.) 3 sheets-sheen 1. C. W. BALDWIN. DEVICE POR OPERATINGlELEVAIGR DOORS. No. 306,049.

Patented Oct. 7

11| .1 v l .I ...1| :Il

N4 Pneus. mwumnmpher. washmgm (No Model.) 3 Sheets-Sheet 2.

- C. W. BALDWIN.

DEVICE FOR OPERATING ELEVATOR DOORS.

N. Firms. nwwmhngmpmr. wamingiw. D. c.

3 Sheets-Sheet 3.

(No Model.)

C.Y W. BALDWIN. .DRVIOR FOR OPERATING RLRVATOR DOORS. NO. 306,049.

Patented OOt. '7, 1884.

M R .,f, ..,/75//////////////////////////V\v\\\9 wm y UNITED STATESPATENT Ormea.

CYRUS IV. BAIIDIN, OF CHICAGO, ILLINOIS.

DEVICE FOR OPERAT'ING ELEVATOR-DOORS.

SPECIFICATION forming part of Letters Patent No. 306,049, dated October7, 1884.

Application tiled September 22, 1882. (Xo model.)

To all whom, t may concern,.- i

Be it known that I, Grans W. BALDWIN, of Chicago, Cook county, Illinois,have invented certain Improvements in Operating Elevator-Doors, of whichthe following is a specification.

My invention consists of certain devices, fully described hereinafter,whereby the opening of any door leading to an elevatonwell will resultin arresting the movement of the cage, and in so locking theoperating-rope that the cage cannot be started 'until the door isclosed.

The invention further consists in means whereby each door is lockedautomatically at the insideand automatically released only when the cageis in position opposite such door; and, further, in appliances forstarting thel cage from the landings when the doors are closed.

In the drawings, Figure l represents in part sectional elevation a,portion of a building wherein the well and doors leading thereto aresituated. Fig. 2 is a sectional plan on the line l 2, Fig. l, the cagebeing below the section plane. Fig. 3 is a cross sect-ional elevation onthe line 3 4, Fig. l. Fig. 4 is an clevation showing a modication. Fig.5 is a sectional plan on the line 5 G, Fig. 4; and Fig. 6 is a sectionof one of the pulls. Fig. 7 is a detached section of the clutch device.

A A represent the floors of a building; C, the doors closing theopenings B leading to the well, which doors may be either hinged orsliding doors.

D is the cage, of any suitable construction, and operated by any of theusual appliances, and E is the hand-rope, passing alongside of lorthrough the cage and connected to the valve or other device by means ofwhich the move ments of the cage are controlled. The handrope alsopasses through oradj acent to a clamp device, IV, which is soconstructed in any manner as to clutch and release the rope. In thefirst case the rope is connected immovably with the cage, so that thefurther motion of the latter in either direction will move the rope 'andclose the valve. In the second case the cage can slide up and downwithout mov ing said rope, as is usual in elevators.

I -have shown a clamp device which has proved to be effective, the sameconsisting of a hollow case, F, through an opening, x, in one end ofwhich the rope passes, and a ser- .door is closed.

rated grooved roller, Z, which, when brought against the rope andcarried up or down will be forced into contact with a serrated inclinedi'ace, y or y, in the case, and jammed between the latter and the rope',thus binding the ropeaga-inst the 'opposite side of the opening .fr andclamping it securely. Normally the roller b is out ot' Contact with therope, and is thrown toward the latter by any suitable means whenever adoor of the well is open, so that no movement of the cage can resultuntil such I may employ many different devices for thus controlling themovements of `the clutch. As shown, the wheel turns on a pin passingthrough a iiat extension on a rod, d, having a sliding and jointedconnection with another rod, d, extended through and guided by the case.A spring, e', bearing against a shoulder on the rodd sufiices to throwboth rods outward, anda lighter spring,

e, bearing on a shoulder of the rod d, will, when the rod d is movedinward, carry the wheel against the rope, the jointed connection thenpermitting the wheel b to move up or down according to the direction thecase is traveling. In either case the clamping of the rope and itsmovement in either direction operates the valve to stop the motion ofthe cage. rlhe end of the rod d extends beyond the cage, and carries afriction-roller, f, and within the well adjacent to each door isarranged a movable plate, G, which, as represented, is hinged at oneedge, and a weight or a spring, h, tends to press the plate G againstthe roller f, force inward the rod d', and stop the cage. Each plate Gis combined with devices which when the door is closed throw the .plateG back to the position shown in dotted lines, Fig. 2, and when the dooris open permit the plate to move inward against the roller f. Thus eachdoor may carry a bracket, j, which, as the door is closed, strikes theend of a sliding rod,

IOO

` ing door is used in connection with the plate G, the latter may beoperated by a rod, k, having stops s' at the ends which are struck by apin or bracket upon the door as the latter is opened and closed, asshown in Figs. 4t and 5.

By the use of the detent or clamp and de vices operated on the openingor closing of the doors, as above described, the stopping of the cageopposite any door` that may be open is thus insured, not only preventingaccidents, but also facilitating the operation of elevators in privateresidences, where the cage must be often stopped and started by partieson the landings.

It will be seen that a cage, when arrested opposite an open door,lcannot be started by any parties at other landings. It will further beseen that if (as sometimes happens,) the car settles, it carries thehand-rope with it and soon shuts the valve, and that a like resultensues if the car rises of itself from any canse. \Vhile the car is thusstopped and locked, -if a door is opened when the car is passing7 thisautomatic action does not in the least interfere with the ordinaryfunctions o f the hand-rope when the doors are all shut. Each door islocked when closed by a detent or catch, II, hung within the well andengaging with a hasp, g, on the door. This detent, as shown, is abell-crank lever, the horizontal arm of which engages with the hasp,while the vertical arm carries a friction-stud that engages with a longrib, a, upon the cage as the latter approaches the door either way, soas to be thereby swung to one side, thus releasing the detent from thehasp and permitting the door to be opened from the landing or from thecage, but only when the latter is opposite the door.

ln private residences, and places where it is not advisable to maintainan attendant in the cage, the latter must be started and stopped byparties on the landings outside of the well. For this purpose I employropes L L', passing over guide-pulleys m on' to a supplementalvalve-cable, N, and extended in opposite directions,and so attached tothe cable that a pull upon one rope will draw down the cable, and a pullon the other will raise the cable,with the same effects as result fromraising and lowering the usual hand-rope. If desired, the cable N may bea continuation of the hand-rope, passing round sheaves at the bottom andtop of the well. A lever or other device may be substituted for theropes L L'. Each rope is provided at the end with a weight to keep ittaut, and such weight may be made in the form of a pull, as shown indetail in Fig. 6,which shows the weight having an eggshaped bodyperforated longitudinally to receive the -end of the rope and the knotthereon, and with an eye or yoke, p, forming part of a block, q, thatscrews into one end of the opening in the body and covers the knot onthe rope.

An annular recess in the periphery of the 7o body receives a rubberring, o, that acts as a guard to prevent the pulls from marring eachother or the walls.

I claim-f l l. A stop device for elevators, consisting of 7 5 a clamparranged upon the cage in proximity to the hand-rope, and appliancesconstructed and arranged to operate said device and clutch the ropewhenever the cage approaches an open door, as set forth.

2. The combination, in an elevator, of a clamp upon the cage, anddevices connected to be operated by the door, and arranged within thewell to strike the clamping device and insure the clutching of the ropewhen a door opposite the cage is opened, as specified.

The combination, with the cage and its rope, of a case 'having inclinedfaces y y', a wheel or roller arranged between the rope and said faces,and appliances whereby to throw the roller to or from the rope accordingto. the position of the door opposite which the cage is traveling,substantially as set forth.

et. The combinationvith the case F and its opening x, and inclined facesy y', of the rods d d', jointed loosely together, the pulley b,car riedby the rod d, and springs c e', proportioned as set forth. n

5. The combination, with the cage and its clamp and with the doors ofthe well, of movable plates G, arranged adjacent to the doors in thewell, and devices whereby a plate is brought into position to be struckby the arm of the clamp when a door is open, substantially as setfort-h.

6. The combination, with the doors leading to the well and arranged tobe opened' only from within the cage, of self-latching catches withinthe well, and a rib upon the cage arranged to unlatch each catch as thecage is brought opposite the door, substantially as specified.

7. The combination,with the cage,of a supplemental valve operating cableand ropes L L', or their equivalent, leading therefrom in IOO IIO

diiferent directions and extending to the landi ings, substantially asdescribed.

8. The combinatiomwith the ropes L L', of weights formed with pulls, asspecified.

In testimony whereof I have signed my name to this specifica-tion in thepresence of two snbscribing witnesses.

CYRUS XV. BALDVIN.

lVitnesscs:

HoLMns Hoen, H. L. KENT.

